Home / 21,043.11-29,050.01-13,087.89

Finding the Fourth Proportional to 21,043.11, 29,050.01 and 13,087.89

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Solution

The fourth proportional to 21,043.11, 29,050.01 and 13,087.89 is: 18,067.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.11 : 29,050.01 = 13,087.89 : x
  2. Step 2: Convert to fraction form
    21,043.11/29,050.01 = 13,087.89/x
  3. Step 3: Cross multiply
    21,043.11x = 29,050.01 × 13,087.89
  4. Step 4: Simplify right side
    21,043.11x = 380,203,269.94
  5. Step 5: Solve for x
    x = 380,203,269.94/21,043.11
  6. Step 6: Final answer
    x = 18,067.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.